Re: [Boost-users] [Asio] Any port with an endpoint

Subject: Re: [Boost-users] [Asio] Any port with an endpoint
From: Johan Nilsson (r.johan.nilsson_at_[hidden])
Date: 2009-10-22 03:50:52

Ryan McConnehey wrote:
> In windows there is the capability to create a socket with an address
> but leave the port number up to windows to select.  Is this possible
> with the asio endpoint or will I always need to define "some" port
> number? 

Something like this used to work (old version of asio):

----
(some using declarations omitted)
asio::io_service ios;
tcp::socket s(ios);
tcp::socket::endpoint_type ep(tcp::v4(), 0); // NOTE: Usage of "0"
s.open(tcp::v4());
s.set_option(tcp::socket::reuse_address(true));
s.bind(ep);
---
s.local_endpoint().port() now holds actual port number bound to.
HTH / Johan